JP3435029B2 - Equipment for manufacturing electrode elements for polymer batteries - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing an electrode element for a polymer battery, and more particularly to a lamination device for a laminate which constitutes the electrode element for a polymer battery.

[0002]

2. Description of the Related Art In recent years, electronic devices such as mobile phones and portable notebook computers have been remarkably made cordless and have high performance. Even in secondary batteries which are the power source of these electronic devices,
Small size, light weight, thinness, large capacity, and high voltage are required. In order to meet such demands, a lithium non-aqueous solvent having a thickness of about 0.5 mm is provided with an electrode element in which a positive electrode layer, a polymer electrolyte layer and a negative electrode layer are superposed and integrated into a sheet shape (thin type). Batteries are also known (eg US Pat. No. 5,296,318).

FIG. 4 is a cross-sectional view showing a main part of a constitutional example of the electrode element for the polymer electrolyte battery. Figure 4
In the above, 1 is an electrolyte-retaining polymer-electrolyte sheet that functions as a separator (for example, a polymer such as hexafluoropropylene-vinylidene fluoride copolymer and an ethylene carbonate solution such as a lithium salt ... a non-aqueous electrolyte solution). System), 2 is a positive electrode sheet formed by laminating an active material such as a metal oxide, a positive electrode layer containing a non-aqueous electrolyte and an electrolyte retaining polymer on a current collector, 3 is an active material that absorbs and releases lithium ions, It is a negative electrode sheet formed by laminating a negative electrode layer containing a non-aqueous electrolytic solution and an electrolyte retaining polymer on a current collector.

Here, as the active material of the positive electrode sheet 2,
Examples thereof include lithium manganese oxide, manganese dioxide, lithium-containing cobalt oxide, lithium-containing nickel cobalt oxide, lithium-containing amorphous vanadium pentoxide, and chalcogen compound. Examples of the negative electrode active material include bisphenol resin, polyacrylonitrile, a calcined product such as cellulose, and a calcined product of coke and pitch, which are natural or artificial graphite, carbon black, acetylene black, Ketjen black, nickel powder. Alternatively, a form containing nickel powder or the like may be adopted.

Further, the electrolyte sheet 1 is made of a non-aqueous solvent such as ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, etc. and lithium perchlorate, lithium hexafluorophosphate, and boro. Lithium tetrafluoride, lithium arsenic hexafluoride, lithium trifluoromethanesulfonate, etc. dissolved in 0.2 to 2 mol / l can be mentioned.

[0006] In manufacturing such a lightweight and flexible lithium polymer battery, the lamination of the electrode elements is premised. That is, the positive electrode sheet 2, which is an electrode element, the separator (polymer-electrolyte system) sheet 1, and the negative electrode sheet 3 are combined in a laminated form, and this laminated body is used as a pressure roller (laminator roller).
Integrate in the process of passing between. In pressing and unifying by the pressing roller, the laminated body is heated and heated to a required temperature in the process of being conveyed by the endless belt so that the pressing and unifying can be easily performed.

After that, the integrated electrode element is cut and separated into a predetermined shape and size, and required external leads are attached.
The back surfaces of the positive electrode sheet 2 and the negative electrode sheet 3 are covered with a resin film for protection / seal layer (sealing layer), or the plasticizer contained in the electrode element is extracted and then sealed in a battery outer can. . If necessary, after supplying / injecting the electrolytic solution, the external lead is led out and the opening of the battery outer can is sealed to form a battery.

The positive electrode sheet 2 and the negative electrode sheet 3 are similarly manufactured by pressure bonding and integration. That is, a positive electrode active material-based sheet or a negative electrode active material-based sheet is laminated so as to sandwich a corresponding current collector layer, and the laminated body is pressure-bonded and integrated to prepare a positive electrode sheet 2 or a negative electrode sheet 3. ing.

[0009]

However, in the step of integrating the laminated body of the electrode members, the laminated body is heated in advance in the conveying process of the previous step, so that the temperature is changed in the process of transferring to the pressure roller. May decrease, resulting in insufficient pressure contact (pressure contact) / integration due to passage between the pressure rollers. That is, in order to facilitate the production of an electrode element sheet having a substantially uniform denseness or composition system by laminating required electrode member sheets, it is necessary to attach the laminated body at a required temperature before pressure bonding and integration. Even if it is heated to the pressure roller and supplied to the pressure roller, a temperature drop occurs during this conveyance / supply process.

Therefore, at the stage of pressure-bonding / integrating with the pressure roller, since the heating temperature suitable for the pressure-bonding / integration does not exist, sufficient pressure-bonding / integration is not performed or the temperature unevenness causes a uniform temperature. It may not be possible to perform crimping and integration. And this problem of crimping and integration,
In other words, the occurrence of defective lamination causes battery failure such as deterioration of cycle characteristics when it is used as a secondary battery. Therefore, it is a serious problem in terms of battery performance, reliability, manufacturing yield, etc. Might pose.

The present invention has been made in view of the above circumstances, and provides a manufacturing apparatus capable of easily manufacturing a high-performance polymer electrode element with a substantially uniform composition system or a dense system at a high yield. To aim.

[0012]

The invention according to claim 1 is arranged substantially parallel to each other so that the facing interval can be arbitrarily set, and the laminated body of the electrode members for the repolymer battery is sandwiched between the traveling members.
A pair of endless belts for conveying, a pair of heating units for heating the laminated body of the polymer battery electrode members sandwiched and conveyed by the endless belts from both sides, and a laminated body conveyed by the endless belts on both sides. A pair of pressure rollers with a built-in heat source that are arranged in parallel by rotating and pressing from the side, a temperature adjusting mechanism that controls the temperature of the pressure roller by the built-in heat source, and the pressure roller. In the apparatus for producing an electrode element for a polymer battery, a laminated body that is pressed against and passes between the opposing surfaces of (1) has a load applying mechanism that applies a load via at least one pressure roller.

According to a second aspect of the present invention, in the apparatus for producing an electrode element for a polymer battery according to the first aspect, at least the outer peripheral surface of the pressure roller is made of heat-resistant and wear-resistant ceramics. .

According to a third aspect of the present invention, a pair of endless belts are arranged substantially parallel to each other so that the facing distance can be arbitrarily set, and the laminated body of the electrode members for polymer batteries are sandwiched and run / conveyed. The laminated body of the polymer battery electrode members sandwiched and conveyed by the endless belt is heated from both sides, and one of them is a pair of heating units arranged so as to be detachable from and contactable with the endless belt, and conveyed by the endless belt. At least one of the pair of pressure rollers arranged in parallel to rotate and press-contact the above-mentioned laminated body from both sides to integrate the laminated body and the laminated body which press-contacts and passes between the facing surfaces of the pressure roller. A load applying mechanism that applies a load through a pressure roller, a load measuring mechanism that measures a load applied to the pressure roller side by the load applying mechanism, and a load load value measured by the load measuring mechanism is calculated. An apparatus for manufacturing a polymer battery electrode element and having a load load control mechanism for controlling the load load load load mechanism by this calculation. According to a fourth aspect of the invention, in the manufacturing apparatus of the polymer battery electrode element according to the third aspect, at least the outer peripheral surface of the pressure roller is made of heat-resistant and wear-resistant ceramics.

In the inventions of claims 1 to 4,
The pair of transport mechanisms for sandwiching and transporting the laminated body of the electrode members for polymer batteries are endless belts, and generally require heat resistance to withstand a temperature of at least about 40 to 200 ° C. Here, the endless belt conveys the laminated body of the polymer battery electrode member to the pressure roller while reinforcing, so to speak, without causing deformation of the polymer battery electrode member. A thickness, a material, a structure, or the like that can transmit a required temperature to the laminated body is desired. For example, when the material is tetrafluoroethylene fiber, a tape or sheet having a thickness of about 0.1 to 0.5 mm is preferable.

Further, the running drive mechanism for running the pair of endless belts has a driving roller as a driving source and a guide roller for guiding running. By traveling at approximately the same speed in the direction, it is possible to avoid the occurrence of frictional damage on the outer peripheral surface of the laminate.

The laminated body of the polymer battery electrode members conveyed and supplied by the endless belt is sandwiched and held by the endless belt, and is opposed to the endless belt so that the laminated members can be conveyed without being deformed or damaged. It is desirable to have a structure in which the distance between the main surfaces of the endless belt can be adjusted. That is, in the form of pressing one endless type belt, the movable type pressure unit is arranged so as to be able to move forward and backward, and by the movement of the movable type pressure unit, the facing distance of the pair of endless type belts is adjusted, It is preferable to adopt a configuration in which the laminated body of the electrode members is reinforced by an endless belt while being held and conveyed in a sandwiched manner.

In the inventions of claims 1 to 4,
The pair of heating units for heating the laminated body of the electrode members for polymer batteries, which are sandwiched and conveyed by the endless belt from both sides, use, for example, electric resistance heat generation or hot water or steam as a heat source.

The pair of pressure rollers that integrate the laminated body of the polymer battery electrode members that have passed (conveyed) through the endless belt are, for example, electric resistance heat generation,
It is made of ceramic, metal, or heat-resistant resin, etc., which incorporates hot water or steam as a heat source. The heat capacity of the heat source may be such that the temperature decrease during the pressure bonding / integration is replenished from the heating temperature in the conveying process, and further, the width and diameter of the pressure roller are integrated by pressure. It is set corresponding to the laminated body of the electrode members for use. In addition,
If at least the outer peripheral surface of the pressure roller is made of heat-resistant and wear-resistant ceramics, it not only exhibits good durability, but also transmits the load from the load-bearing mechanism during pressure bonding and integration. It will be easier.

The pressure roller is disposed adjacent to the transport mechanism, for example, in the running direction of the endless belt, and the laminate of the electrode members for the polymer battery, which is sandwiched and held by the endless belt, is continuously supplied. The composition is adopted.
Therefore, by rotating at substantially the same speed as the endless belt, it becomes possible to avoid the occurrence of frictional damage on the outer peripheral surface of the laminate and to integrate them. In addition,
The pressure roller may be rotated and driven by an independent rotation drive source, but it may be configured to use the transport drive source for the endless belt.

According to the first and second aspects of the present invention, the laminated body of the polymer battery electrode members is conveyed and supplied to a pressure roller which is sandwiched and held by a pair of endless belts and which is heated and pressure-integrated. To be done. In other words, the laminated body of the polymer battery electrode member that does not lose its shape or easily deforms itself is heated to a required temperature and is sandwiched and held by the endless type belt so that it does not lose its shape or deform. It is supplied to a pressure roller that is integrated by pressure.

In addition, when the pressure roller is integrated with the pressure roller, the pressure roller functions as an appropriate heating source, and the pressure load and the action of integrating the pressure roller are reinforced. Therefore, it is possible to easily manufacture a high-quality polymer battery electrode element having a substantially uniform thickness, denseness, and composition system.

According to the third and fourth aspects of the present invention, the load applied via the pressure roller is more accurately or appropriately applied, so that the pressure-bonding / unifying action of the laminate is properly controlled. Therefore, a high-quality and high-performance battery element for polymer batteries can be provided more easily and in mass production.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to FIGS.

1 and 2 show a schematic structure of an electrode element manufacturing apparatus according to the first embodiment. FIG. 1 is a partially cutaway perspective view, and FIG. 2 is a side view of a main part. In FIGS. 1 and 2, 4a and 4b are a pair of support bodies fixedly arranged on a base (not shown), and 5a and 5b are the pair of support bodies 4
A pair of heat-resistant endless belts arranged so as to be driven by a and 4b are driven to travel by a travel drive mechanism (not shown).

Here, a pair of heat-resistant endless belts
5a and 5b are made of, for example, tetrafluoroethylene fiber, have a thickness of about 0.2 mm, a width of 27 cm, and a total length of about 70 cm, and run in a fixed direction by a rotation drive roller 6a and rotation guide rollers 6b, 6c. Is configured. Further, the pair of heat-resistant endless belts 5a and 5b are arranged substantially parallel to each other so that the facing interval can be arbitrarily set, and the laminated body 7 of the electrode members for polymer batteries is sandwiched and held and conveyed. There is.

Further, 8 is the endless belt 5a,
Endless belts 5a and 5b corresponding to the thickness of the laminated body 7 of the polymer battery electrode members sandwiched and conveyed by 5b.
A pressure unit for adjusting the distance between the surfaces, and 9a and 9b are a pair of heating units for heating the laminated body 7 of the electrode members for the polymer battery sandwiched and conveyed by the endless belts 5a and 5b from both sides. .

Here, the pressure unit 8 is arranged so as to be able to move forward and backward, facing the endless belts 5a and 5b, by an air cylinder 10, for example. In other words, install the air cylinder 10 on the opposite side of the pressure unit 8.
The cylinder fixing plate 8a, which is arranged and fixed to the air cylinder 10, is moved forward and backward by adjusting the adjusting unit 8b, so that the pressurizing unit 8 is moved forward and backward to adjust the required distance between the endless belts 5a and 5b. The heating units 9a and 9b are, for example, electric heating elements, and are set to keep the endless belts 5a and 5b heated to a temperature of about 80 to 180 ° C.

Further, 11a and 11b are a pair of pressure rollers (laminate rollers) for integrating the laminated body 7 of the electrode members for polymer batteries which have passed through the endless belts 5a and 5b.
Is. The pressure rollers 11a and 11b are made of, for example, tool steel and have a diameter of about 7 to 15 cm and a roller width of about 25 to 50 cm, and are configured to rotate at substantially the same peripheral speed.

The pressure rollers 11a and 11b have electrically heating bodies (not shown) connected to the temperature control mechanism 12 built therein in an electrically insulating manner to heat the pressure rollers 11a and 11b to about 30 to 100 ° C. .Holded and, for example, pressure roller 11a
The rotary shaft of the pressure roller 11b is fixed, and the rotary shaft of the pressure roller 11b is supported by a bearing that can slightly slide to the pressure roller 11a side under the load.

Further, the pressure rollers 11a and 11b are a chain sprocket with an overload safety device mounted on the rotation shaft of each driving roller 6a of the endless belts 5a and 5b, a chain, and pressure rollers 11a and 11a. It is configured to rotate via a chain sprocket attached to the rotating shaft of 11b. That is, the pressure rollers 11a and 11b are driven to rotate in synchronization with the rotational conveyance of the endless belts 5a and 5b.

Further, 13 is a load-loading mechanism, for example, an air cylinder, which applies a load to the pressure roller 11a opposite to the pressure roller 11b which is supported by a slidingly movable bearing.

Next, the operation of the manufacturing apparatus having the above structure will be described.

First, an electrolyte-retaining polymer-electrolyte system (for example, a hexafluoropropylene-vinylidene fluoride copolymer) having a band shape and having a function of a separator is sandwiched with a band-shaped positive electrode (for example, an active material such as a metal oxide). A positive electrode layer containing a substance and an electrolyte retaining polymer is laminated on a current collector, and a strip-shaped negative electrode (for example, an active material that absorbs and releases lithium ions and a negative electrode layer containing an electrolyte retaining polymer are laminated on the current collector). A laminated body 7 is prepared.

Next, the adjusting unit 8b is adjusted in correspondence with the laminate 7 forming the electrode element for polymer battery, and the pressing unit 8 is moved back and forth to form the endless belt 5.
Set the facing distance between a and 5b. After that, the driving rollers 6a of the traveling mechanism are driven and rotated to form an endless belt.
While running 5a, 5b in a predetermined direction, the laminated body 7 forming the electrode element is supplied between the facing surfaces of the endless belts 5a, 5b, and the sandwiching and carrying operation is started.

In the carrying process, the heating units 9a and 9b whose heat generation is adjusted in advance are used to set a predetermined temperature (generally 80
The laminated body 7 forming an electrode element is heated via the endless belts 5a and 5b held at a temperature of up to 180 ° C. At this point, the pressing of the pressure unit 8 is the adjustment unit.
By adjusting 8b, the opposing surfaces of the endless belts 5a and 5b are held at appropriate intervals, so there is no risk of friction or damage to the electrodes located on the outer peripheral surface, and there is no risk of deformation or deformation. Occurrence is also prevented / suppressed.

The laminated body 7, which is primarily heated in the process of conveying the endless belts 5a and 5b, is rotated by the pressure rollers 11a and 11b in synchronization with the driving and running of the endless belts 5a and 5b. The pressure rollers 11a and 11b are supplied to the pressurizing rollers 11a and 11b to perform pressure integration. That is, the laminated body 7 that is temporarily integrated is 30 to 100 by a built-in heating source (not shown) whose temperature is controlled by the temperature control mechanism.
When passing between the pressure rollers 11a and 11b heated and held at about ℃, the temperature drop and temperature variation of the laminated body are eliminated and suppressed.

Therefore, the heating temperature in the carrying / supplying stage is easily maintained, and the flexibility is substantially uniform.
Combined with the application of pressure load by the pressure rollers 11a and 11b, the polymer has a proper thickness and a proper structure and structure, and is uniformly pressed and pressure-bonded (heat-bonded). A battery electrode element is easily manufactured.

In the manufacturing apparatus, the pressure roller
If a pressure roller whose outer peripheral surface is coated with wear-resistant and corrosion-resistant ceramics is used instead of 11a and 11b, it is easier to obtain a high-quality battery because of non-adhesion to the pressure roller. You can get the element.

3 (a) and 3 (b) show the schematic construction of the manufacturing apparatus according to the second embodiment. FIG. 3 (a) is a side view of the main part, and FIG. 3 (b) is a schematic view. It is a top view of a part. In FIGS. 3 (a) and 3 (b), 4a and 4b are a pair of supports fixedly arranged on a base (not shown), and 5a and 5b are drivable by the pair of supports 4a and 4b. It is a pair of heat-resistant endless belts provided. Here, the endless belts 5a and 5b are made of, for example, tetrafluoroethylene fiber and have a thickness of about 0.2 mm, a width of 27 cm, and a total length of about 70 cm, and the rotary drive roller 6a.
Further, the rotation guide rollers 6b and 6c are configured to travel in a fixed direction so as to face each other. Further, the pair of heat-resistant endless belts 5a and 5b are arranged substantially parallel to each other so that the facing interval can be arbitrarily set, and the laminated body 7 of the electrode members for polymer batteries is sandwiched and held and conveyed. There is.

Further, 9a and 9b are the endless belts.
It is a pair of heating units for heating the laminated body 7 of polymer battery electrode members sandwiched and conveyed by 5a and 5b from both sides. Here, the heating units 9a and 9b are, for example, electric heating bodies, and the endless belts 5a and 5b are
The temperature is set to about ℃ for heating and holding.

Further, 11a and 11b are a pair of pressure rollers (laminate rollers) for integrating the laminated body 7 of the electrode members for polymer batteries which have passed through the endless belts 5a and 5b.
Is. The pressure rollers 11a and 11b are made of tool steel and have a diameter of about 7 to 15 cm and a roller width of about 25 to 50 cm.
By b, it adopts a configuration that rotates at the same peripheral speed.

The pressure rollers 11a and 11b have electric heating elements (not shown) connected to the temperature control mechanism 12 built therein in an electrically insulating manner, and the pressure rollers 11a and 11b are heated to about 30 to 100 ° C. .Holded and, for example, pressure roller 11a
The rotating shaft of the pressure roller 11b is fixed, and the rotating shaft of the pressure roller 11b is supported by a bearing portion 11c which can slightly slide to the pressure roller 11a side under the load.

Further, 13 is a load applying mechanism for applying a load to the laminated body 7 which is pressed against and passes between the facing surfaces of the pressure rollers 11a and 11b via at least one pressure roller 11b (or 11a). For example, an air cylinder), 15 is a load measuring mechanism that measures the load applied to the pressure roller 11b side by the load applying mechanism 13, 16 is a calculation mechanism that calculates the load value measured by the load measuring mechanism 15, and 17 is The arithmetic mechanism
A load load control mechanism for controlling the load load of the load load mechanism 15 by the calculation of 16.

As described above, the construction of the manufacturing apparatus according to the second embodiment has at least one pressure roller 11a, 11b.
The structure is basically the same as that of the manufacturing apparatus according to the first embodiment except that a load adjusting / controlling mechanism is additionally provided. Therefore, the operation itself of heating the laminated body of the polymer battery electrode members to perform pressure bonding / integration is the same as in the case of the first embodiment, but for the pressure rollers 11a, 11b during pressure bonding / integration. It is different in that the load is applied more properly.

That is, depending on the state of the laminated body (for example, temperature, soft viscosity, etc.) that is pressure-contacted between the facing surfaces of the pressure rollers 11a, 11b and is pressure-bonded and integrated, a suitable pressure roller 11a, 11b is connected. Although the crimping force (pressure contact force) and other factors inevitably differ, the load and load are adjusted and controlled.
By selecting and setting an appropriate load, it becomes possible to easily manufacture an electrode element having excellent homogeneity such as thickness and composition distribution. The present invention is not limited to the above examples, and various modifications can be made without departing from the spirit of the invention. For example, in the configuration with a pressurizing unit attached, the heating unit can be separated and configured, and an oil cylinder or the like is used instead of the air cylinder as the advancing / retreating / driving source of the pressurizing unit or the load / load mechanism. It may be configured.

[0047]

According to the first and second aspects of the present invention, it is possible to provide a high-quality polymer battery electrode element with high yield and in a mass-produced manner. That is, in the lamination of the electrode element for the polymer battery, since the lamination is performed in a state where the pressure roller is properly regulated load and temperature, there is no qualitative variation such as compactness.
It is possible to manufacture constant performance electrode elements. And
The ability to manufacture electrode elements with constant performance enables mass production of highly reliable polymer batteries.

According to the third and fourth aspects of the present invention, since the pressure roller is laminated with proper load regulation more easily, there is no qualitative variation such as compactness and constant performance. The electrode element can be easily manufactured. The ability to easily manufacture electrode elements with constant performance enables mass production of highly reliable polymer batteries with high yield and at low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a configuration of an electrode element manufacturing apparatus according to a first embodiment.

FIG. 2 is a side view showing the main part of the configuration of the electrode element manufacturing apparatus according to the first embodiment.

3A and 3B show a main part of a configuration of an electrode element manufacturing apparatus according to a second embodiment. FIG. 3A is a side view and FIG. 3B is a top view.

FIG. 4 is a sectional view showing a schematic configuration of an electrode element for a polymer battery.

[Explanation of symbols]

5a, 5b ... Endless belt 6a …… Drive roller 7 ... Laminate for forming electrode elements 8 ... Pressure unit 8a …… Cylinder fixing plate 8b …… Adjust unit 9a, 9b ... Heating unit 10 …… Air cylinder 11a, 11b ... Pressure roller 11c …… Bearing part that can move slidably 12 …… Loading mechanism 13a, 13b …… Motor 15 …… Load measuring device 16: Load value calculation mechanism 17 …… Load control mechanism

─────────────────────────────────────────────────── --Continued from the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01M 6/02 H01M 6/18 H01M 10/40

Claims (4)

(57) [Claims] 1. A pair of endless belts, which are arranged substantially parallel to each other so that the facing distance can be arbitrarily set, and which sandwiches and runs a laminate of electrode members for a repolymer battery, and the pair of endless belts. A pair of heating units for heating the conveyed laminated body of the polymer battery electrode members from both sides, and the laminated body conveyed by the endless belt are arranged in parallel by rotating and pressing from both sides to integrate them. A pair of pressure rollers with a built-in heat source, a temperature adjusting mechanism that controls the temperature of the pressure roller by the built-in heat source, and a laminated body that presses and passes between the facing surfaces of the pressure roller,
A load applying mechanism for applying a load via at least one pressure roller, and a manufacturing apparatus of an electrode element for a polymer battery, comprising: 2. The apparatus for manufacturing an electrode element for a polymer battery according to claim 1, wherein at least the outer peripheral surface of the pressure roller is made of heat-resistant and wear-resistant ceramics. 3. A pair of endless belts which are arranged substantially parallel to each other so that the facing distance can be arbitrarily set and which travels and conveys a laminate of polymer battery electrode members in a sandwiched manner, and a pair of the endless belts. The polymer battery electrode member laminate to be conveyed is heated from both sides, and one is a pair of heating units arranged so as to be detachable from and contactable with the endless belt, and the laminate conveyed by the endless belt. A pair of pressure rollers arranged in parallel that rotate and press contact from both sides to be integrated, and a laminate that presses and passes between the facing surfaces of the pressure rollers,
A load applying mechanism that applies a load through at least one pressure roller, a load measuring mechanism that measures the load applied to the pressure roller side by the load applying mechanism, and a load load value measured by the load measuring mechanism. An apparatus for manufacturing an electrode element for a polymer battery, comprising: a load load control mechanism that calculates and controls the load of the load load mechanism by this calculation. 4. The apparatus for manufacturing an electrode element for a polymer battery according to claim 3, wherein at least the outer peripheral surface of the pressure roller is made of heat-resistant and wear-resistant ceramics.